The youngest part of the ocean floor is always found around mid-ocean ridges or other magma vents. The ocean floor moves up from the new earth developed at the edges of the continental plates.
The youngest parts of the ocean floor are also often made from reborn earth from underwater volcanoes and are constantly in the process of being newly created. The location of the youngest rocks on the sea floor indicates that new rocks typically form in the middle or shallowest area of the ocean. One line of new, relatively shallow rocks is known as the Mid-Atlantic Ridge. New rock material added to the edges of the South American and African continental plates was the cause of the separation of the two continents.